The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming
May 2002 by W. Dan HauselThe Keystone district includes a group of mineralized shear zones and veins that are associated with the Keystone Quartz Diorite in the Medicine Bow Mountains of southwestern Wyoming. Gold production from this district is unknown, although some estimates suggest that 7,500 to more than 12,000 ounces were produced.
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• A look at the numbers...
The Royal Canadian Mint will soon unveil a gold coin worth one million Canadian dollars ($850,000 US).
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
When you approach a location, even if you've been there before, you should consider all the factors and conditions present at the site. This includes both natural and man-made factors.
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.
The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.
While the election outcome is highly and hotly debated, yet another major portion of the world’s attention remains focused on developments with the COVID-19 pandemic itself...
The Bawl Mill • Our Readers Say • California Wilderness Coalition and The Nature Conservancy Recruit Government Employees to Carry Out Huge Land Grab • Drywashing Rules Clarified • Mineralized Calderas in Colorado • Picks & Pans: Mining Tungsten Ore—A Case History • Gold in Oregon • Aussie Gold—A Look at the Northern Territory • The Phoenix Gold Mine: A Brief History • Calico Mine • Mining Stock Quotes and Mineral & Metal Prices • Looking Back • Melman on Gold & Silver